\begin{tabular}{l*{5}{c}} \toprule
                    &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}\\
\midrule
\textbf{Panel A:} Brazil&                      &                      &                      &                      \\
\addlinespace
Conventional        &                 0.112&                 0.109&                 0.098&                 0.110\\
                    &         [0.095,0.129]&         [0.094,0.125]&         [0.076,0.119]&         [0.090,0.130]\\
\addlinespace
Robust              &                 0.086&                 0.110&                 0.089&                 0.081\\
                    &         [0.060,0.111]&         [0.090,0.131]&         [0.056,0.123]&         [0.054,0.109]\\
\midrule
\textit{N}          &                 47717&                130581&                 29906&                 77401\\
Bandwidth           &                  2.78&                  7.76&                  1.75&                  4.56\\


\midrule
\textbf{Panel B:} Colombia&                      &                      &                      &                      \\
\addlinespace
Conventional        &                 0.227&                 0.220&                 0.216&                 0.229\\
                    &         [0.204,0.250]&         [0.197,0.243]&         [0.189,0.242]&         [0.203,0.255]\\
\addlinespace
Robust              &                 0.208&                 0.221&                 0.216&                 0.202\\
                    &         [0.176,0.240]&         [0.193,0.249]&         [0.177,0.255]&         [0.169,0.236]\\
\midrule
\textit{N}          &                 37744&                 78980&                 26354&                 57717\\
Bandwidth           &                  5.18&                 13.10&                  3.53&                  8.44\\


\midrule
\textbf{Panel C:} Denmark&                      &                      &                      &                      \\
\addlinespace
Conventional        &                 0.223&                 0.193&                 0.219&                 0.155\\
                    &         [0.128,0.317]&         [0.079,0.307]&         [0.115,0.323]&         [0.036,0.274]\\
\addlinespace
Robust              &                 0.141&                 0.092&                 0.087&                 0.085\\
                    &         [0.010,0.271]&        [-0.044,0.229]&        [-0.055,0.228]&        [-0.071,0.240]\\
\midrule
\textit{N}          &                  1220&                  1379&                  1107&                  1281\\
Bandwidth           &                  4.84&                  7.73&                  3.73&                  5.74\\


\midrule
\textbf{Panel D:} Finland&                      &                      &                      &                      \\
\addlinespace
Conventional        &                 0.032&                 0.019&                 0.012&                -0.001\\
                    &         [0.010,0.055]&        [-0.003,0.042]&        [-0.017,0.040]&        [-0.029,0.026]\\
\addlinespace
Robust              &                -0.013&                -0.015&                -0.035&                -0.017\\
                    &        [-0.052,0.025]&        [-0.046,0.015]&        [-0.075,0.005]&        [-0.058,0.024]\\
\midrule
\textit{N}          &                 48060&                 98641&                 32011&                 77660\\
Bandwidth           &                  1.40&                  3.37&                  0.99&                  2.28\\
Bandwidth selector  &                   MSE&                   MSE&                   CER&                   CER\\
Polynomial          &                Linear&             Quadratic&                Linear&             Quadratic\\
\bottomrule \end{tabular}
